react-native-wagmi-charts/lib/module/charts/line/CursorCrosshair.js

A sweet candlestick chart for React Native

function _extends() {
  return (
    (_extends = Object.assign
      ? Object.assign.bind()
      : function (n) {
          for (var e = 1; e < arguments.length; e++) {
            var t = arguments[e];
            for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
          }
          return n;
        }),
    _extends.apply(null, arguments)
  );
}
import React from 'react';
import { Platform, View, StyleSheet } from 'react-native';
import Animated, {
  useAnimatedStyle,
  withSpring,
} from 'react-native-reanimated';
import { LineChartCursor } from './Cursor';
import { useLineChart } from './useLineChart';

/**
 * Delay in milliseconds before enabling spring animations on Android. This
 * prevents crashes that can occur when spring animations are enabled on initial
 * render.
 */
const ANDROID_SPRING_ANIMATION_DELAY_MS = 100;
LineChartCursorCrosshair.displayName = 'LineChartCursorCrosshair';
export function LineChartCursorCrosshair({
  children,
  color = 'black',
  size = 8,
  outerSize = 32,
  crosshairWrapperProps = {},
  crosshairProps = {},
  crosshairOuterProps = {},
  ...props
}) {
  const { currentX, currentY, isActive } = useLineChart();

  // It seems that enabling spring animation on initial render on Android causes a crash.
  const [enableSpringAnimation, setEnableSpringAnimation] = React.useState(
    Platform.OS === 'ios'
  );
  React.useEffect(() => {
    const timer = setTimeout(() => {
      setEnableSpringAnimation(true);
    }, ANDROID_SPRING_ANIMATION_DELAY_MS);
    return () => clearTimeout(timer);
  }, []);
  const animatedCursorStyle = useAnimatedStyle(
    () => ({
      transform: [
        {
          translateX: currentX.value - outerSize / 2,
        },
        {
          translateY: currentY.value - outerSize / 2,
        },
        {
          scale: enableSpringAnimation
            ? withSpring(isActive.value ? 1 : 0, {
                damping: 10,
              })
            : 0,
        },
      ],
    }),
    [currentX, currentY, enableSpringAnimation, isActive, outerSize]
  );
  return /*#__PURE__*/ React.createElement(
    LineChartCursor,
    _extends(
      {
        type: 'crosshair',
      },
      props
    ),
    /*#__PURE__*/ React.createElement(
      Animated.View,
      _extends({}, crosshairWrapperProps, {
        style: [
          styles.crosshairWrapper,
          {
            width: outerSize,
            height: outerSize,
          },
          animatedCursorStyle,
          crosshairWrapperProps.style,
        ],
      }),
      /*#__PURE__*/ React.createElement(
        View,
        _extends({}, crosshairOuterProps, {
          style: [
            styles.crosshairOuter,
            {
              backgroundColor: color,
              width: outerSize,
              height: outerSize,
              borderRadius: outerSize,
            },
            crosshairOuterProps.style,
          ],
        })
      ),
      /*#__PURE__*/ React.createElement(
        View,
        _extends({}, crosshairProps, {
          style: [
            {
              backgroundColor: color,
              width: size,
              height: size,
              borderRadius: size,
            },
            crosshairProps.style,
          ],
        })
      )
    ),
    children
  );
}
const styles = StyleSheet.create({
  crosshairWrapper: {
    alignItems: 'center',
    justifyContent: 'center',
  },
  crosshairOuter: {
    opacity: 0.1,
    position: 'absolute',
  },
});
//# sourceMappingURL=CursorCrosshair.js.map